Sen. Ted Cruz’s Democratic challenger Rep. Beto O’Rourke raised more than double the amount the Republican incumbent raised in the second quarter of 2018.

O’Rourke’s campaign announced he raised $10.4 million in the most recent fundraising quarter from 215,714 individual contributions.

“This campaign is proving every single day that going everywhere, fighting for everyone and running without PACs or special interests isn’t just the right thing to do, but the best way to win,” O’Rourke said in a campaign email.